The Benefits of Home Exercise in Pulmonary Hypertension Interstitial Lung Disease

Mean Change in Cardiac Effort From Baseline to 16 Weeks

Cardiac Effort is measured as the ratio of the total number of heart beats recorded during the Six Minute Walk Test to the total distance walked in meters. Heart rate is continuously monitored during the test using a validated heart rate monitoring device. The value represents the number of heart beats required per unit distance walked (beats per meter). Individual participant values are calculated at baseline and at 16 weeks. The outcome is defined as the mean change in Cardiac Effort from baseline to 16 weeks across participants. Lower values indicate improved cardiac efficiency and better functional performance, while higher values indicate reduced efficiency and worse functional status.

Mean Change in Six Minute Walk Distance From Baseline to 16 Weeks

Six Minute Walk Distance is measured using the standardized Six Minute Walk Test according to established clinical guidelines. The total distance walked in meters during six minutes is recorded for each participant. Individual participant values are collected at baseline and at 16 weeks. The outcome is defined as the mean change in distance walked from baseline to 16 weeks across participants. Higher values indicate improved functional capacity, while lower values indicate reduced exercise tolerance.

Mean Change in emPHasis-10 Score From Baseline to 16 Weeks

Quality of life is measured using the emPHasis-10 questionnaire, a validated patient reported outcome instrument specific to pulmonary hypertension. The questionnaire consists of 10 items assessing symptoms and impact on daily life. Scores range from 0 to 50, with higher scores indicating worse health related quality of life. Individual participant scores are calculated by summing item responses. The outcome is defined as the mean change in total score from baseline to 16 weeks across participants.

Mean Change in King's Brief Interstitial Lung Disease Questionnaire Score From Baseline to 16 Weeks

Quality of life is measured using the King's Brief Interstitial Lung Disease questionnaire, a validated instrument assessing health status in interstitial lung disease. Scores range from 0 to 100, with higher scores indicating better health status. Individual participant scores are calculated according to standard scoring procedures. The outcome is defined as the mean change in score from baseline to 16 weeks across participants.

Mean Change in Lower Extremity Muscle Strength From Baseline to 16 Weeks

Muscle strength is measured using a Lafayette Muscle Dynamometer for quadriceps strength and a Jamar Hand Dynamometer for hand grip strength. Measurements are recorded in pounds (lbs) for each participant. Individual participant values are obtained at baseline and at 16 weeks. The outcome is defined as the mean change in muscle strength from baseline to 16 weeks across participants. Higher values indicate greater muscle strength, while lower values indicate reduced strength.